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Cornerstone · Grades 3–5 Keystones #1 14 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 14 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 7x + 9 = 93

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 4:3:1

    Answer: 100, 75 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 18, 28, 50, 43, 36, 15, 16

    Answer: 29.4

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